Here is a debdiff of changes to pygobject to add Breaks of old aptdaemon and software-center (older than the version currently uploaded to raring-proposed, to fix postinst to deal with this issue), to avoid running the postinst with the old code which causes this issue.
** Patch added: "pygi-1173249.debdiff" https://bugs.launchpad.net/ubuntu/quantal/+source/aptdaemon/+bug/1173249/+attachment/3655303/+files/pygi-1173249.debdiff -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to pygobject in Ubuntu. https://bugs.launchpad.net/bugs/1173249 Title: update-software-center AttributeError during upgrade from 12.10 to 13.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/aptdaemon/+bug/1173249/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs